Scallop cap



C. HAMMER.

SCALLOP CAP.

' APPLICATION man APH.27. 1911.

Patented July 1, 1919.

.mm mm an /M T .m fm. .m w .w .h d mw CHARLES HAMMER, OF QUEENS, NEW YORK, ASSIGNOR, -BY DIRECT AN D IVIESNE ASSIGNMENTS, T AMERICAN METAL CAP C0., 0F BROOKLYN, NEW YORK.

SCALLOP CAP.

Specification of Letters Patent.

Patented July 1, 1919.

Continuation of application Serial No. 841,808, filed May 27, 1914. This application filed April 27, 1917. Serial N o. 164,832.

.. cured on Ibottles 'and jars having screwthreads or lugson the neck, and which closuresv are providedl with projections extending inward and arranged in the form of partial screw-threads, to engage the lugs and cause the closure to bescrewed securely down on the top of the bottle.

One object of the present invention is to provide a kind of lug that is formed by bending upwardly projections lon the cap flange, in such a manner .that each 1u will present a raw edge in-position to direct y engage the lug or thread on the 'bottle neck, and each lug will also present a bent portion of the projection to engage the thread on the bottle.

A further object of the invention is to provide a form of the thread engaging projection thatis so disposed relative to the .screw-thread on the bottleneck that the pitch of the threads in the two cooperating members are slightly different, whereby the projection will first engagewith the thread' Ion the bottle at the portion provided with the raw edge, and upon further application A of the closure by screwing it down, the projection will slightly yield at the engaging portion to cause-engagement throughout the extent of the projection with the bottle thread.

A further object is to provide in connection with the described form of cap, strengthening means extending around the flange adjacent the said projections, in the nature of a rib or corrugation. A

In the accompanying drawings showing embodiments of my invention, Flgure 1 is a vertical central section through the closure before the flanges are bent up to their final form. Fig. 2 is a similar view of the finished closure, with the jar threads indicated. Figi 3 is a fragmentary bottom plan View of the closure. Fig. 4 is a fragmentary section enlarged on the line 4--4 of Fig. 3. Fig. 5

is a fragmentary section enlarged on the line 5 5 of Fig. 3. Fig. 6 is a fragmentary section enlarged on the line 6-6 of Fig. 3. Fig. 7 shows a section of a modification, with the projections before bending, and Fig. 8 shows the same in the bent form. Fig. 9 is a fragmentary bottom plan of the elosure shown in Fig. 8. Fig. 10 is an enlarged section on the line 10-10 of Fig. 8. Fig.

11 is an enlarged section on the line 11-11.

of Fig, 8. Fig. 12 is an enlarged section on the line 12-12 of Fig. 8.

In the arrangement shown in Figs. 1-6, I provide a cap comprising atop 18 and a flange 19 of cylindrical form, on the bottom of which are series of projections 20, four being shown. Each of these projections is so formed that when it is bent over inwardly at an angle to the top plane of the cap it will be inclined thereto, and will also be curved corresponding to the cylindrical curve of the flange; and further the edge of the margin is given a kind of roll or bend whereby one portion,l as at 21, will present a raw edge of the projection to the thread y22 of the jar, as indicated in Figs. 2 and extending farther toward the flange portion 19. At the other end of the projection the bend extends still farther in the form of a roll or bead, as indicated in Fig. 6.' It will be further observed from these three sectional views, that as the bend approaches the projection, it is located a greater distance from the top. By reason of this construction of the projection or lug, the portion 21 will present a raw'edge 'to engage the thread on the jar, while the other Vtwo portions will present practically a bent edge or portion.

It will be further seen from Fig. 2 that the angle which the portion of the lug that engages with the thread 22, makes with the thread, is of a slightly different pitch or inclination, whereby the portion 21 of the projection which has the raw edge formation, will first engage the thread. 22. Upon further application of the cap this part of the projection will yield slightly suficient to cause engagement with the bottle thread throughout the length of the projection.

In Figs. L12 is shown a' modification in which a cap having the ange-26 is provided with projections'27 that have one side edge abruptly inclined at 28, and the opposite side at 29 having a very gradual incline or slope, and the projection is further provided with an abrupt shoulder at 30, where by one portion 'of the projection extends for a greater depth from the top of the cap than the other portion, when the projections are Vfirst formed, as indicated in Fig. 7. Vhen thesev projections are -rolled inwardly at an incline to the top of the closure, a raw edge will be provided at 3l adjacent the inclined side edge 29 of the projection, as indicated in Figs. 9 and 10. The portion beyond the shoulder 30 willbe bent inwardly as indicated at 32 in Figs. 9 and 12. The intermediate portion 33 is indicated in Fig. 11.

This projection in its final form may also be given a pitch slightly different from the pitch of the thread 34C on the bottle neck, as indicated in Fig. 8.,

When either of these forms of closures are applied to a threaded bottle neck, the raw edge will cause the projection or lug to engage with a Very strong friction that will assist" in securely retaining the closure on the jar. The projections will also yield and cause engagement throughout the eX- tent of the projections, with the threads or lugs on thebottle neck.

Having thus described my invention, what l claim is 1. A.. closure for a storage vessel coinprising a flanged cap having a plurality of' pro-n jections each bent over inwardly to orin lugs on the inside oil the flange adapted to engage the screw tl'iread on a jar, each lug presenting to the thread an initially en gaged raw edge of the projection and also a bent portion of the projection adapted to be pulled inwardly' toward the by said raw 1 edge.

te 2. closure lor a sto C a a iq. g a llai i cap haul .g s .L n., ject nent over engage the a greatr each proj side with the otl er tion gradini io i..

jection.

4gzngeinent of' the bent edge therewith.

meeneeengage the screw thread on a jar, each lug presenting to' the jar thread a raw edge of' the projection and also a bent portion of the projection, the said lugs being so inclined and the said engaging raw edge of the lug and the bent edgev of the lug being so arranged relative to the engaging portion of' the ar thread, whereby to cause the raw edge t0 engage the thread previous to en- 4. A closure for a storage vessel, coinpris- `7 ing a flanged cap having a plurality of proj ections each of which has one side of greater depth from the top of the cap than the other portion with an abrupt shoulder between such portions, said projections being bent over inwardly to forfln lugs on the inside of the flange adapted to engage screw threads on a jar, each lug having one of its said portions presenting a raw edge to the jar thread and the other said portion presenting a bent edge to the jar thread.

5. A. closure for a storage vessel, comprising a flanged cap having a plurality of projections each of which has one side of greater depth from the topof the cap than the other portion withan abrupt shoulder between such portions,.said projections being bent over inwardly to forni lugs on the inside of the flange adapted to engage screw threads on a jar, each lug havingfone of its said portions presenting a raw edge to the jar thread and the other said portion presenting a bent edge to the jar thread, the longer of said projection portions having a steep side edge and the other said portion having the side gradually inclined.

t. A closure for a storage vessel, comprising a flanged cap having a plurality of proj ections each of which has one side of greater depth from the top of the cap than the other portion with an abrupt shoulder between such portions, said projections being it over inwardlv to forni lugs on the indapted engage screw lug aving one of its w edge to the senting a bent edge to the jar thread, the longer ofsaid proJection portions havin a steep side edge and the other said portion having the side gradually inclined, said engaging raw edge of' the lug and the bent edge of the lug, being arranged relative to the engaging portion of the jar thread whereby to cause the raw edge to engage previous to the engagement of the bent edge.

8. A closure for a storage vessel, comprising a flanged cap having a plurality of projections each of which has one side of greater depth from the top of the cap than the other portion with an abrupt shoulder between suchk portions, saidy pro]ections being bent over inwardly to 'form lugs on the inside of the flange adapted to engage screw threads on a jar.

9. A closure for a storage vessel comprising a top and a flange, said flange having a plurality of extensions curledover inwardly to form bead like lugs of substantially unlform thicknessb on the inside of said flange,

i each lug being shaped to present an edge and a curved surface to the top of the closure, both said edge and the curved surface being designed 'to engage the vessel and enablethe closure to seal the same.

10. A closure for a storage vessel comprising a top and a flange, said flange having an extension rovided with a stee edge and a sloping e ge, said extension being curled over and inwardly to form a lug on the inside of the flange, said lug being shaped so as to present an edge and a curved surface to the top of the closure, both said edge and said curved surface being designed to engage the vessel and enable the closure to seal the same.

11. A closure for a storage vessel comprising a top and a flange, said flange having a plurality of extensions each provided with a steep edge and a sloping edge2 each ex- .tension being curled over and projecting inwardly to form alug on the inside of the flange, each lug being shaped to present an edge and a curved surface to the top of the cover, both said edge and said curved surface being designed to engage the vessel and enable the closure to seal the same.

12. A closure for a storage vessel comprising a to and a flange, said flange being provided with extensions having a steep edge at one end and a sloping edge at the other and having an edge between the terminal edges to. enable the extensions to be curled over and project inwardly in order to form a lug on the inside of the flange, said lug being shaped to present an edge and a curved surface to the top of the closure, both said edge and said curved surface being designed to engage the vessel and enable the closure to seal the same.

13. A closure for a storage vessel comprising a top and a flange, said flange being provided with a plurality of extensions, each having a sloping edge at one end and an` abrupt edge at ythe other, and an abrupt edgebetween said edges to enable the extensions to be curled over inwardly of the flange to provide lugs, each of said lugs being shaped to present an edge and a curved surface to the top of the closure, both said edge and said curved surface being designed to engage the vessel and enable the closure to seal the same.

CHARLES HAMMER.v 

